Name:_________________________ Period:_____ MOMENTUM WORD PROBLEMS • Momentum is a measure of how hard it is to stop a moving object, and it is the product of an object’s mass and velocity. The equation for momentum is shown below: p=m×v Where… p = momentum (in kg·m/s), m = mass (in kg), and v = velocity (in m/s) NOTE: To earn full marks when solving science word problems, you must SHOW YOUR WORK: 1. Calculate the momentum of a 0.145 kg baseball being thrown at a speed of 40.0 m/s. 2. If a 6.0 kg bowling ball is rolled with a velocity of 3.5 m/s, what is the momentum of the ball? 3. Which has more momemtum, a 3.0 kg mass moving at 9.0 m/s or a 5.0 kg mass moving at 5.0 m/s? 4. A bicycle has a momentum of 25.00 kg·m/s and a velocity of 2.5 m/s. What is the bicycle’s mass? 5. What is the velocity of a 0.5 kg ball that has a momentum of 3.00 kg·m/s? 6. An 8000.0 kg truck starts off from rest and reaches a velocity of 18.0 m/s in 6.00 seconds. What is the truck’s acceleration and how much momentum does it have after it has reached this final velocity? Name:_________________________ Period:_____ 7. Little Tammy lines up to tackle Jackson to (unsuccessfully) prove the law of conservation of momentum. Tammy’s mass is 34.0 kg and Jackson’s is 54.0 kg. Jackson is running at a velocity of 3.0 m/s. What must Tammy’s minimum velocity be in order to stop Jackson’s forward momentum? 8. In a collision, a 25.0 kg mass moving at 3.0 m/s transfers all of its momentum to a 5.0 kg mass. What is the velocity of the 5.0 kg mass after the collision? 9. What is the momentum of a 35.0 kg cannonball fired from a cannon with a velocity of 500.0 m/s? 10. Your brother’s mass is 55.0 kg, and he as a 2.0 kg skateboard. What is the combined momentum of your brother and his skateboard if they are going 8.50 m/s? BONUS: A 15.0 kg medicine ball is thrown at a velocity of 10.0 m/s to a 60.0 kg person who is a rest on ice. The person catches the ball and immediately slides across the ice. Assume that momentum is conserved and there is no friction. Calculate the velocity of the person AND THE BALL.
